Abstract
The Next Generation Science Standards (NGSS) and the Framework for K-12 Science Education (NRC, 2012) on which they are based, describe a new vision for science education that includes having students learn science in a way that more closely aligns to how scientists and engineers work and think. Accomplishing this goal will require teacher educators to make important shifts in the ways they prepare future science teachers (NRC, 2012). Many science teaching methods courses are being reformed to better support future science teachers to meet the ambitious goals of the NGSS. Specifically, these reform efforts require evidence-based and standards-aligned tools to help preservice teachers align instruction with the new science standards. This study utilized the methodology of Improvement Science "Plan, Do Study, Act" cycles in order to design a Three-Dimensional Mapping Tool (3D Map) as a visual scaffold for use in science teaching methods courses to support preservice teachers in unpacking the components of NGSS and to promote discourse related to the three-dimensionality of planning instruction. The 3D Map provides a visualization of key elements of the NGSS, while being flexible enough to accommodate established teaching strategies.